Biologist

ARTICLE

GALLERY

HISTORY

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Event Content

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Biologist has been made unobtainable from the game as of the 5th of June 2026 as it was part of the Ducky Revenge Event.
Players with the item in question can continue using it, but you cannot obtain this item anymore, outside of limited-time promotional sales.

<infobox>

 <title source="title"><default>Biologist</default></title>

<image source="image"></image> <panel> <section> <label>Static</label> <image source="image-static"> </image> </section> <section> <label>Dynamic</label>

<format>

File:BiologistDynamic.png

</format> </section>

 </panel>
 <label>Unlock Cost</label>
 <label>Golden Perk Cost</label>
 <label>Tower Cost</label>
 <label>Level Requirement</label>
 
 	<label>Role</label>
 	<format>Support
   </format>
 
 <label>Placement</label>
 <label>Placement Limit</label>
 <group collapse="open">
   <header>Statistics</header>
   <panel>
    <section>
     <label>Regular</label>
     <label>Base Cost</label>
     <label>Base Selling Cost</label>
     <label>Base Damage</label>
     <label>Damage Method</label>
     <label>Base Firerate</label>
     <label>Base Range</label>
     <label>Base Income</label>
     <label>Base Spawnrate</label>
     <label>Hidden Detection</label>
     <label>Lead Detection</label>
     <label>Flying Detection</label>
     <label>Immunities</label>
     
     	<label>Placement Footprint</label>
     	<format>Average (1.5)
       </format>
    
    </section>
    <section>
     <label>PVP</label>
     <label>Base Cost</label>
     <label>Base Selling Cost</label>
     <label>Base Damage</label>
     <label>Damage Method</label>
     <label>Base Firerate</label>
     <label>Base Range</label>
     <label>Base Income</label>
     <label>Base Spawnrate</label>
     <label>Hidden Detection</label>
     <label>Lead Detection</label>
     <label>Flying Detection</label>
     <label>Immunities</label>
     
     	<label>Placement Footprint</label>
     	<format>{{{pvp_footprint}}}
       </format>
     
    </section>
   </panel>
 </group>
 <group collapse="closed">
   <header>Evolution</header>
   
    <label>Evolved From</label>
    <format>{{{evolved_from}}}</format>
   
   <label>Evolves Into</label>
   <label>Evolution Levels</label>
   <label>Base Exp</label>
   <label>Growth Rate</label>
   
    <label>Skip Cost</label>
    <format>Robux {{{skip_cost}}}</format>
   
 </group>
 <group collapse="closed">
   <header>Audio</header>
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 </group>
 <group collapse="closed">
   <header>Tooltips</header>
   
   
   
   
   
   
 </group>

</infobox>

File:Quote.png

"There's a zombie on your lawn... This calls for all out, plants versus zombies warfare!"

―Inventory Description

File:Quote.png

"Spring 2025 Event Tower"

―Former Inventory Description

Description

The Biologist is an exclusive tower that creates plants around itself. It could have been obtained from beating Bathroom Approach in the Hard difficulty. It can be obtained via a limited-time gamepass for Robux 849.

The tower itself does not attack, as it only has three statistics: range, deadzone range and firerate. All of these statistics are only used by its ability to place down various plants, which is how it deals damage. The plants will only be placed down in its range, but not its deadzone range. As it has a firerate of 1, it means it can only place down one plant every second. It can deploy three types of plants, these being the Sunflower, Ivy (Level 1+) and Nightshade (Level 3+).

• Sunflower is the most basic plant, as it targets a single enemy and deals damage to it. At Level 2+, it can additionally detect Hidden enemies.
• Ivy deals energy damage with an AOE effect, applying poison to enemies. The poison deals damage over time and slightly slows down enemies. It can also damage Lead enemies with its explosion and poison.
• Nightshade is similar to the Sunflower, as it also deals damage to a single target. However, it fires far slower, deals more damage and applies confusion to enemies. It can also detect Flying enemies.

The Biologist has a placement limit of eight per player.

Upgrades

Bio Chemistry

Level 1 • Cost: Cash$600

+4 Damage Damage

+50 Health Health

•8 Damage Damage

•14 Range Range

•2 Firerate Firerate

•100 Health Health

•20 Spawnrate Spawnrate

•20 Lifespan Lifespan

•3 Explosion Range Explosion Range

•1 Poison Damage Poison Damage

•0.75s Poison Tick Poison Tick

•4.5s Poison Time Poison Time

•5% Slowdown Slowdown

•20 Projectile Speed

•Lead Detection Lead Detection

Sell Price changes to Cash$450

File:BiologistUpgradeIcon1.png

Scientific Breakthrough

Level 2 • Cost: Cash$1,850

+1 Unit Queue

+2 Damage Damage

+2 Range Range

+100 Health Health

+Hidden Detection Hidden Detection

+4 Damage Damage

+1.5 Range Range

2 > 1.8 Firerate Firerate

+100 Health Health

3 > 4 Explosion Range Explosion Range

+1 Poison Damage Poison Damage

5% > 7.5% Slowdown Slowdown

Sell Price changes to Cash$1,066

File:BiologistUpgradeIcon2.png

Flower Power

Level 3 • Cost: Cash$4,500

+16 Damage Damage

+2.5 Range Range

•1.1 > 1 Firerate Firerate

+200 Health Health

+13 Damage Damage

+1.5 Range Range

+200 Health Health

4 > 4.5 Explosion Range Explosion Range

+2 Poison Damage Poison Damage

0.75 > 0.6 Poison Tick Poison Tick

•50 Damage Damage

•30 Range Range

•3 Firerate Firerate

•20 Spawnrate Spawnrate

•20 Lifespan Lifespan

•400 Health Health

•1 Confusion Time Confusion Time

•4 Confusion Cooldown Confusion Cooldown

•Flying Detection Flying Detection

Sell Price changes to Cash$2,566

File:BiologistUpgradeIcon3.png

Botanical Berserker!

Level 4 • Cost: Cash$20,000

+1 Unit Queue

+27 Damage Damage

+3 Range Range

1 > 0.8 Firerate Firerate

+400 Health Health

+20 Damage Damage

+1.5 Range Range

1.8 > 1.5 Firerate Firerate

+400 Health Health

+1 Poison Damage Poison Damage

0.6 > 0.65 Poison Tick Poison Tick

4.5 > 5.2 Poison Time Poison Time

7.5% > 12.5% Slowdown Slowdown

+85 Damage Damage

+5 Range Range

3 > 2.75 Firerate Firerate

+400 Health Health

1 > 1.25 Confusion Time Confusion Time

Sell Price changes to Cash$9,233

File:BiologistUpgradeIcon4.png

Statistics

To see the statistics without the Firerate Bug.

Open in Statistics Editor

Biologist Stats
Level	Cost	Total Cost	Firerate	Range	Deadzone Range	Unit Queue	Projectile Speed
0	Cash$750	Cash$750	1	4	1.5	1	5
1	Cash$600	Cash$1,350	1	4	1.5	1	5
2	Cash$1,850	Cash$3,200	1	4	1.5	2	5
3	Cash$4,500	Cash$7,700	1	4	1.5	2	5
4	Cash$20,000	Cash$27,700	1	4	1.5	3	5

<tabber> |-|Sunflower =

Sunflower Stats
Level	Health	Damage	Spawnrate	Firerate	Lifespan	Range	Detections	DPS	Max DPS	Min Cost Efficiency	Max Cost Efficiency
0	50	6	20	1.1	20	15	N/A	5.45	5.45	Cash$137.61	Cash$137.61
1	100	10	20	1.1	20	15	N/A	9.09	9.09	Cash$148.51	Cash$148.51
2	200	12	20	1.1	20	17	Hidden	10.91	21.82	Cash$293.31	Cash$146.65
3	400	28	20	1	20	19.5	Hidden	28	56	Cash$275	Cash$137.5
4	800	55	20	0.8	20	22.5	Hidden	68.75	206.25	Cash$402.91	Cash$134.3

|-|Ivy =

Ivy Stats
Level	Health	Damage	Poison Damage	Spawnrate	Firerate	Poison Tick	Lifespan	Range	Explosion Range	Poison Time	Slowdown	Detections	Total Elapsed Damage	DPS	Max DPS	Min Cost Efficiency	Max Cost Efficiency
1	100	8	1	20	2	0.75	20	14	3	4.5	5%	Lead	6	5.33	5.33	Cash$253.28	Cash$253.28
2	200	12	2	20	1.8	0.75	20	15.5	4	4.5	7.5%	Lead	12	9.33	18.67	Cash$342.98	Cash$171.4
3	400	25	4	20	1.8	0.6	20	17	4.5	4.5	7.5%	Lead	30	20.56	41.11	Cash$374.51	Cash$187.3
4	800	45	5	20	1.5	0.65	20	18.5	4.5	5.2	12.5%	Lead	40	37.69	113.08	Cash$734.94	Cash$244.96

|-|Nightshade =

Nightshade Stats
Level	Health	Damage	Spawnrate	Firerate	Lifespan	Range	Confusion Time	Confusion Cooldown	Detections	DPS	Max DPS	Min Cost Efficiency	Max Cost Efficiency
3	400	50	20	3	20	30	1	4	Flying	16.67	33.33	Cash$461.91	Cash$231.02
4	800	135	20	2.75	20	35	1.25	4	Flying	49.09	147.27	Cash$564.27	Cash$188.09

</tabber>

Skins

To see all the upgrades of a skin, see the gallery page.

	File:GrimBiologistIcon.png
Skin	Grim
Rarity	Rare
Daily Store Cost	N/A
Obtained From	Triumphing Bathroom Approach on the Hard difficulty three times, Robux 399

Strategy

• The Biologist is extremely versatile, having a good damage output and a cheap price, making it an excellent choice for early game while also being a solid sub-DPS/support in the mid to late game.
  • It is also a good option for Hardcore since its units has all forms of detection. Do note that enemies with two or more enemy types that require detections, such as the Lead Balloon, will be immune to the damage from its units.
• The Sunflower has the highest DPS out of all the plants, making it great against single enemies.
  • It is also the only plant with hidden detection, meaning that this plant should be used when they spawn.
  • It offers the best cost efficiency out of all the plants, making it highly effective to place multiple Sunflowers.
• The Ivy can be great against hordes of enemies, due to its attack dealing damage in an area.
  • Unlike most other explosions, this one does not bypass defense.
  • Any enemy hit by it also has poison applied to it, which deals damage over time and slightly slows it down. This makes it useful at stalling enemies, though the slowdown is quite low.
    • This effect is the same as the one applied by the Toxic Gunner, though it has different statistics. In case of both towers applying poison, Toxic Gunner's effect will take priority.
  • Both the explosion and its poison can damage Lead enemies, making the Ivy useful against such enemies.
• The Nightshade, similarly to the Sunflower, targets a single enemy and deals damage to them, though unlike it, the Nightshade also confuses them, allowing them to stall the enemies while damaging them.
  • Because of this, the Nightshade will deal less DPS than the Sunflower, but it will gain more time to damage enemies because of its confusion, alongside its massive range.
  • Confusion can only be applied by Nightshade every four seconds. Additionally, it will not apply it if any confusion cooldown is active, even one from other towers such as the Jester.
    • This also applies to other towers. If the Nightshade's confusion effect ends, a Jester will be unable to apply confusion to that enemy.
• Most buffs work on the Biologist. However, most of them are insignificant as none of them are applied to units which are its method of attacking enemies.
  • Because of this, towers which debuff the enemies such as the Electroshocker, Freezer or Warden are recommended to use alongside the Biologist, as they can make its plants deal more damage or give them more time to kill them.
  • The DJ Booth's discount buff is quite helpful since the tower itself has expensive upgrades.
  • Damage Buffs given by DJ Booth and Mercenary Base are completely useless as the effects does not apply to the units.
    • Same thing can be said for detection buffs given by Ace Pilot and Firework Technician.
  • The Range Buff and debuff will change the range in which the Biologist can deploy plants.
  • The Firerate Buff and debuff can alter the minimal time between each plant being created. This, however, only has an impact in cases where plants have very similar timers.
• When using purely Ivy or Nightshade, changing target types to Random can allow each unit to target different enemies for maximum disperse of stalling.
• Fully upgrading the Bigger Budget Skill can allow the Biologist to be placed on Wave 0 for early defense in based game modes such as survival.
  • Additional economy Skills like Stonks can also be helpful.
• Depending on the mode, such as Frost mode, Biologist's units can be destroyed easily.
  • This can be countered by placing Biologist further away from the path.

Trivia

• The Biologist is based on the gameplay of the classic Plants vs. Zombies games.
  • The gamepass description for this tower references the game two times, once by saying its name and once by referencing Zombies On Your Lawn, a song from the credits of Plants vs. Zombies.
• The Ivy is stated in the unit queue description to deal single target DPS, despite it dealing splash damage.
• The Biologist currently has the shortest range out of any tower.
• The Biologist is the second reoccurring tower, after Firework Technician.
• The Biologist, despite having its only supportive capability being unlocked past Level 3, is categorized in the support role.

Update History

For previous cosmetic variations, see the gallery page.

• 16 April 2025 - v1.61.0
  • Biologist added.
  • Skin: Grim
  • Bug: When sold, its third plant will not disappear from the map until its lifespan ends.
  • Bug: Biologist creates far more plants than it is supposed to during periods of intermission after reviving, restarting or before a match starts.
  • Bug: Certain enemies will break when targeting a Biologist, causing them to either stop using their abilities or stopping their movement entirely.
  • Bug: Biologist is not affected by certain debuffs.
  • Bug: Biologist is unaffected by stuns from legacy enemy if they are fired like a minigun or beam, examples include the Gunslinger, Warden and Minigunner enemies.
  • Bug: Biologist can create plants even when frozen.
  • Bug: Biologist can create plants even when jailed.
  • Bug: When in range of a Medic, it will be able to affect less towers with its Cleansing ability. Stacks with each Biologist or other similarly bugged tower/skin in range.
  • Bug: Biologist can create an additional plant before its plant cooldown timer reaches 0, causing there to be an extra plant in-game for a short time.
  • Bug: Enemies can collide with the Biologist units.
  • Bug: Units deal damage and projectiles are not aligned, damage is dealt instantly while projectiles are delayed.
• 30 April 2025 - v1.63.0
  • Description updated.
  • Bugfix: Certain enemies no longer get stuck when targeting the Biologist.
• 14 May 2025 - v1.64.0
  • Level 1 upgrade name changed from Bio Chemestry to Bio Chemistry.
• 26 May 2025 - v1.64.0a
  • Cost decreased from Robux 849 to Robux 594.
• 28 May 2025 - v1.65.0
  • Biologist can no longer be obtained by triumphing Bathroom Approach.
    • It is still available via the gamepass.
  • Cost increased from Robux 594 to Robux 849.
  • Bugfix: Biologist no longer breaks the Medic's Cleansing ability.
• 11 June 2025 - v1.67.0
  • Biologist is no longer obtainable from the gamepass.
  • Bugfix: Plants now disappear properly when sold.
• 3 April 2026 - v1.88.0
  • Biologist is now re-obtainable from triumphing Bathroom Approach again.
  • Biologist is now purchasable through a gamepass for Robux 849.
• 22 May 2026 - v1.91.0
  • Gamepass price decreased from Robux 849 to Robux 636.
    • Bug: Gifting was not discounted.
• 27 May 2026 - v1.91.4a
  • Gamepass price increased from Robux 636 to Robux 849.
• 5 June 2026 - v2.0.0
  • Firerate decreased due to the Firerate Bug being fixed.
  • Biologist can no longer be obtained by triumphing Bathroom Approach.
  • Statistical changes:
    • Base
      • Sunflower firerate decreased from 1.125 to 1.1.
    • Level 1
      • Ivy firerate decreased from 2.025 to 2.
    • Level 2
      • Ivy firerate changed from to .
    • Level 3
      • Sunflower firerate changed from to .
      • Nightshade firerate decreased from 3.025 to 3.
    • Level 4
      • Sunflower firerate changed from to .
      • Ivy firerate changed from to .
      • Nightshade firerate changed from to .

Notes

File:TowerNewHeader.png